Ralf Holzer, MD
NPI 1629064795 · Pediatric Cardiology Physician · New York, NY
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ralf Holzer, MD is a Pediatric Cardiology Physician provider in New York, NY (NPI 1629064795).
Provider details
- NPI number
- 1629064795
- Entity type
- Individual
- Primary specialty
- Pediatric Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 35086049 (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-09-23
- Last updated
- 2018-10-15
Frequently asked questions
- What is Ralf Holzer's NPI number?
- Ralf Holzer's National Provider Identifier (NPI) is 1629064795, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ralf Holzer's specialty?
- Ralf Holzer is listed in the NPPES registry with a primary specialty of Pediatric Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is Ralf Holzer located?
- Ralf Holzer's practice location on file with NPPES is 525 E 68th St, New York, NY 10065-4870.
- What is Ralf Holzer's phone number?
- The practice phone number listed in the NPPES registry for Ralf Holzer is (212) 746-3561.
- Does Ralf Holzer accept Medicare?
- Ralf Holzer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ralf Holzer's NPI active?
- Yes — Ralf Holzer's NPI (1629064795) is active in the NPPES registry as of the last update on 2018-10-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.